IL127199A0 - Method and apparatus for hard handoff in a cdma system - Google Patents

Method and apparatus for hard handoff in a cdma system

Info

Publication number
IL127199A0
IL127199A0 IL12719997A IL12719997A IL127199A0 IL 127199 A0 IL127199 A0 IL 127199A0 IL 12719997 A IL12719997 A IL 12719997A IL 12719997 A IL12719997 A IL 12719997A IL 127199 A0 IL127199 A0 IL 127199A0
Authority
IL
Israel
Prior art keywords
mobile
base stations
station
delay
active
Prior art date
Application number
IL12719997A
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of IL127199A0 publication Critical patent/IL127199A0/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Paper (AREA)
  • Threshing Machine Elements (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

The cellular communication system includes a number of base stations through which a mobile unit communicates. The mobile unit maintains a list of active base stations with which it can communicate. One of the active stations is in communication with the mobile and uses this communication to measure the round-trip-delay between mobile and station. This delay is compared with a threshold and if this is exceeded, and the base station is a boundary station, then a hard hand-off is executed. The mobile can also monitor candidate base stations and if a triggering pilot signal is detected a hand-off can be triggered. Preferably the handoff can be between base stations controlled by different mobile switching centres.
IL12719997A 1996-05-23 1997-05-23 Method and apparatus for hard handoff in a cdma system IL127199A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/652,742 US5848063A (en) 1996-05-23 1996-05-23 Method and apparatus for hard handoff in a CDMA system
PCT/US1997/009305 WO1997044984A2 (en) 1996-05-23 1997-05-23 Method and apparatus for hard handoff in a cdma system

Publications (1)

Publication Number Publication Date
IL127199A0 true IL127199A0 (en) 1999-09-22

Family

ID=24617975

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12719997A IL127199A0 (en) 1996-05-23 1997-05-23 Method and apparatus for hard handoff in a cdma system

Country Status (15)

Country Link
US (1) US5848063A (en)
EP (2) EP0951793B1 (en)
JP (1) JP3933696B2 (en)
CN (3) CN100592818C (en)
AT (2) ATE509490T1 (en)
AU (1) AU717479B2 (en)
BR (1) BR9712089A (en)
CA (1) CA2256425A1 (en)
DE (1) DE69738471T2 (en)
ES (1) ES2299185T3 (en)
FI (1) FI982520A (en)
HK (1) HK1023676A1 (en)
IL (1) IL127199A0 (en)
RU (1) RU98123191A (en)
WO (1) WO1997044984A2 (en)

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Also Published As

Publication number Publication date
CN1297175C (en) 2007-01-24
DE69738471T2 (en) 2008-11-13
CN1968525A (en) 2007-05-23
HK1023676A1 (en) 2000-09-15
FI982520A (en) 1999-01-22
BR9712089A (en) 1999-08-31
CN1215736C (en) 2005-08-17
CN1225786A (en) 1999-08-11
EP0951793A2 (en) 1999-10-27
WO1997044984A3 (en) 1997-12-31
EP1492373A3 (en) 2006-05-31
EP0951793B1 (en) 2008-01-16
WO1997044984A2 (en) 1997-11-27
DE69738471D1 (en) 2008-03-06
ES2299185T3 (en) 2008-05-16
JP3933696B2 (en) 2007-06-20
RU98123191A (en) 2000-09-27
FI982520A0 (en) 1998-11-20
US5848063A (en) 1998-12-08
AU3372297A (en) 1997-12-09
ATE384410T1 (en) 2008-02-15
JP2000511380A (en) 2000-08-29
ATE509490T1 (en) 2011-05-15
AU717479B2 (en) 2000-03-30
CN1561140A (en) 2005-01-05
CA2256425A1 (en) 1997-11-27
EP1492373A2 (en) 2004-12-29
EP1492373B1 (en) 2011-05-11
CN100592818C (en) 2010-02-24

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